Abstract: The present disclosure provides a denture bearing mechanism, a denture three-dimensional scanner and a control method thereof. The denture bearing mechanism includes a fixed seat, a bearing table and a driving assembly, where the fixed seat is detachably mounted on a storage table of the denture three-dimensional scanner; the bearing table is arranged on the fixed seat and connected to the driving assemblies; the driving assemblies are used for driving the bearing table to move relative to the fixed seat; and at least two scanning stations for placement of denture models are provided on the bearing table, so that the scanning stations can be mutually switched over in a motion state.